Zusammenfassung
Gray-Weale and Beattie's rationalization of the neg. charge obsd. on the surface of water in terms of accumulation of OH- is based on the supposedly uniquely large dielec. decrement of hydroxide solns. [A. Gray-Weale and J. K. Beattie, Phys. Chem. Chem. Phys., 2009, 11, 10994]. We challenge this rationalization and point to another ion, namely fluoride, which has a comparable dielec. decrement and size and which is repelled from the surface of water.
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